Freezer for ice-cream



(No Model.)

W. TUNSTILL.

FREEZER FOR ICE CREAM, 81:0.

No. 307,075. Patented Oct. 21, 1884.

(z r p 1 B I W '1 T H i V .Z' I E t I "terns \VILLIAM TUN STILL, OF

Parana @rrrcn.

.3ROOKLYN, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 307,075,6lated October 21, 1884-.

Application filed May 19, 1884. (No model.)

T0 or whom it may concern.-

Beit known that 1, WILLIAM TUNSTILL, of .Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Freezers for Ice-Cream, &c., of which the following is a specification.

This invention is for facilitating the manufacture of ice-cream, water-ices, &c., and relates to the combination of devices hereinafter described.

In making some qualities of ice-cream it is desired to keep the mass as solid and firm as possible. In other instances the materials require to be whipped up into a frothy consistency. I provide one instrument for both ob jects. In placing the material into the freezer it is usuallyin a liquid condition. Thefreezer may be tipped up nearly vertically for entering or removing the materials, and the freezer is placed in ahorizontal position while the 'same is being revolved, because the cream is cooled more uniformly and rapidlyin this position.

In the drawings, Figure 1 is a longitudinal section of the freezer, Fig. 2 is a plan view of the same, and Fig. 3 is an elevation of the cross-bar.

The ice-holding box is made with abottom, A, sides C, and closed end B, and it is supported by a framing, as shown, having side pieces, 1), uprights E, and cross-bearers I and said iceboX is let into this framing and rests upon the cross-bearers F in a horizontal position, and it is in this position that the freezer is revolved in making theice-cream,watcr-ice, or similar material. The ice-box may have a cover or partial cover to retain cold air and retard melting. The cream-cylinder II is made with a fixed head, I, having a central pivot or cular, and fits the groove 0 in the ring K. There is a gate'piece, L, the lower edge of which is concave and semicircular to fit over I the metal ring K or a peripheral groove in its 1 surface. This gate-piece L is parallel with and fits closely to the head L, and is held in place by screws and nuts passing through the same and through slots in ear pieces orflanges upon. the head L, as at 7;. Should there be any leakage of ice-water, it cannot enter the creanrcylinder, because the ring K extends outside the head L, and such leakage will pass down the surface of the head L and be taken away by the waste-pipe Z or other suitable appliance. The interior of the ring K is turned off true to form a seat for the metallic head N There maybe a packing-ring secured to the head N in any desired manner, but usually it will only be necessary to grind the same to place and secure it by the crossbar I, the ends of which are notched (see Fig. 3) to pass upon the screws, and beneath the clampingnuts 1), and be clamped by such nuts to the ring K, so as to press the head N closely to its seat. This head is removed when filling or emptying the freezer.

To the hub of the head N, or to the crosspiece I? of the sameIthe bevel gear-wheel Q is fastened, and this is acted upon by the bevel gear-wheel 1%, its shaft-pinions g and h, nywheel S, and handle I, or other suitable means, so as to revolve the wheel Q, the head N, ring K, and cylinder II to refrigerate any material that may be placed in the cylinder I-I within the mixture of ice and salt in thebox A B C. There is within the cylinder II a heater or scraper, T, constructed with an arm and pivot, r, at one end, and an arm, 1, at the other end, to which the shaft to is fastened. The pivot 1* passes into a socket at the inner end of the head I, and the shaft it passes through the tubular hub of the head N, and the outer end of such shaft to is supported in the slotted bearing Y, so as to be easily removed whenever the cylinder of the freezer is opened. There is a bevel gear-wheel,\l'-, on the shaft 11. The shaft 1; is supported by a sleeve-bearing secured to the frame D, and upon said shaft are the bevel gear-wheel It and toothed pinion g. The shaft f extends across the frame of the freezer and is carried in suitable bearings, and upon said shaft are the fly-wheel with a handle, and the toothed pinion h,that meshes with pinion g on shaft o. IVhen the handle and fly-wheel are turned and the pinions and bevel-gears set in motion, the cylinder H will be revolved in one direction and the shaft a in the other direction, carrying with it the beater or scraper T, and this movement causes violent agitation of the contents of H, whipping up the materials into a frothy condition, as well as scraping the interior of H during the freezing operation. The bevel-gear R is secured upon the shaft r, and there is a collar upon said shaft, and a set-screw which can be loosened and the shaft and gear moved back away from the gears Q and \V, when .it is desired to lift the freezer from the ice-box. After removal the freezer is preferably stood upon end for filling. The fly-wheel can be turned either from right to left or left to right, and the mechanism and freezer revolved aceordingly, at pleasure of the operator without in any way affecting the working of the machine.

I claim as my invention- 1. The combination, with the cylinder H,of a ring, K, and movable head N, and a box for the ice, and an end to such box through which the ring K projects, so as to prevent ice-water or salt entering the cylinder H, substantially as set forth.

2. The cylinder H, ring K, movable head, and means for rotating the cylinder, in combination with the ice-box A B O, and head L and gate L, the edges of which head L pass into a peripheral groove in the ring R, substantially as set forth.

3. The combination, with an ice-box, the cylinder H, and its ring K, of the head N, and the notched cross-bar l,the Sll2l1fi1'Ll,D1leCl LI111)S 1) upon the ring R for holding the bar I and head N in plaee,the beater upon the shaft a, and the bevel-gears Q and W also upon said shaft, the bevel-gear R and its shaft, a frame and separate bearing for the same, and a crank, whereby the head, bar, beater, shaft, and gears Q N can be removed from the cylinder II and gear It, and its actuating mechanism, substantially as set forth.

Signed by me this lath (lay of May, A. D. 18853.

XVILLIAM TUNSTILL.

Vitnesses:

HAROLD SERRELL, \VILLIAM G. Mo'r'r. 

